Itchy pubic hair reasons are as follows: 1, and wearing chemical fiber material, too tight panties, excessive sweat secretion or pathogenic bacteria infection, etc. From a health point of view, it is recommended that the best to wear cotton, loose underwear, some women prefer to wear chemical fiber material, too tight underwear, although it can show the body type, but lead to poor perineum permeability, as well as affecting the perineum’s blood circulation, prone to cause the symptoms of itching. 2, if the weather is too hot, or some women especially like sports, resulting in increased secretion of sweat in the perineum, can also cause the symptoms of itching pubic hair. 3, pathology, mycobacteria, trichomonas, mycoplasma and other infections can easily lead to vulvovaginitis, but also prone to cause itching pubic hair symptoms, it is recommended that the best to go to the hospital to test the routine of the vaginal secretion, according to the specifics of the examination, the selection of appropriate drug treatment.